use actix_web::{get, web, HttpResponse, Responder};
use cached::proc_macro::once;
use ramhorns::Content;

use crate::{
    config::Config,
    template::{read_md_file, File, Infos},
};

#[get("/blog")]
pub async fn index(config: web::Data<Config>) -> impl Responder {
    HttpResponse::Ok().body(get_index(config.get_ref().clone()))
}

#[derive(Content)]
struct BlogIndexTemplate {
    posts: Option<Vec<Post>>,
}

#[derive(Content)]
struct Post {
    title: String,
    url: String,
    file: File,
}

#[once(time = 60)]
pub fn get_index(config: Config) -> String {
    config.tmpl.render(
        "blog/index.html",
        BlogIndexTemplate { posts: None },
        Infos {
            page_title: Some("Blog".to_string()),
            page_desc: Some("Liste des posts d'Anri".to_string()),
            page_kw: Some(["blog", "blogging"].join(", ")),
        },
    )
}

#[derive(Content)]
struct BlogPostTemplate {
    post: Option<File>,
}

#[get("/blog/{id}")]
pub async fn page(path: web::Path<(String,)>, config: web::Data<Config>) -> impl Responder {
    HttpResponse::Ok().body(get_post(path.into_inner().0, config.get_ref().clone()))
}

pub fn get_post(file: String, config: Config) -> String {
    let mut post = None;
    let infos = _get_post(&mut post, file);

    config
        .tmpl
        .render("blog/post.html", BlogPostTemplate { post }, infos)
}

fn _get_post(post: &mut Option<File>, filename: String) -> Infos {
    let blog_dir = "data/blog";
    let ext = ".md";

    *post = read_md_file(&format!("{blog_dir}/{filename}{ext}"));

    let title = match post {
        Some(data) => match &data.metadata.info.title {
            Some(text) => text,
            None => &filename,
        },
        None => &filename,
    };

    Infos {
        page_title: Some(format!("Post: {}", title)),
        page_desc: Some("Blog d'Anri".to_string()),
        page_kw: Some(["blog", "blogging", "write", "writing"].join(", ")),
    }
}